title: Primary pyogenic spondylitis following kyphoplasty: a case report.
abstract: BACKGROUND
  Only ten cases of primary pyogenic spondylitis following vertebroplasty have been reported in the literature. To the best of our knowledge, we present the first reported case of primary pyogenic spondylitis and spondylodiscitis caused by kyphoplasty.
  
  
  METHODS
  A 72-year old Caucasian man with an osteoporotic compression fracture of the first lumbar vertebra after kyphoplasty developed sensory incomplete paraplegia below the first lumbar vertebra. This was caused by myelon compression following pyogenic spondylitis with a psoas abscess. Computed tomography guided aspiration of the abscess cavity yielded group C Streptococcus. The psoas abscess was percutaneously drained and laminectomy and posterior instrumentation with an internal fixator from the eleventh thoracic vertebra to the fourth lumbar vertebra was performed. In a second operation, corpectomy of the first lumbar vertebra with cement removal and fusion from the twelfth thoracic vertebra to the second lumbar vertebra with a titanium cage was performed. Six weeks postoperatively, the patient was pain free with no neurologic deficits or signs of infection.
  
  
  CONCLUSIONS
  Pyogenic spondylitis is an extremely rare complication after kyphoplasty. When these patients develop recurrent back pain postoperatively, the diagnosis of pyogenic spondylitis must be considered.
authors.affiliation: Department of Orthopaedics, University Hospital Marburg, Baldingerstrasse, 35033 Marburg, Germany. schofer@med.uni-marburg.de.
authors.forename: Markus D
authors.initials: MD
authors.lastname: Schofer
authors.forename: Stefan
authors.initials: S
authors.lastname: Lakemeier
authors.forename: Christian D
authors.initials: CD
authors.lastname: Peterlein
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Heyse
authors.forename: Markus
authors.initials: M
authors.lastname: Quante